News tagged with dwarf galaxy

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Where are all the dwarfs?

Astronomers of the international CLUES collaboration have identified "Cosmic Web Stripping" as a new way of explaining the famous missing dwarf problem: the lack of observed dwarf galaxies compared with that ...

Feb 01, 2013
3.6 / 5 (5) 2

Nearby dwarf galaxy and possible protogalaxy discovered

(Phys.org)—Peering deep into the dim edges of a distorted pinwheel galaxy in the constellation Ursa Major (the Great Bear), astronomers at Case Western Reserve University and their colleagues have discovered a faint dwarf ...

Jan 11, 2013
4 / 5 (4) 0 | with audio podcast

GALEX reveals the largest-known spiral galaxy

(Phys.org)—The spectacular barred spiral galaxy NGC 6872 has ranked among the biggest stellar systems for decades. Now a team of astronomers from the United States, Chile and Brazil has crowned it the largest-known ...

Jan 10, 2013
4.8 / 5 (10) 2 | with audio podcast

How white dwarfs mimic black holes

(Phys.org)—A remarkable observation by astronomers from the University of Southampton has been published in one of the world's foremost astrophysics research journals.

Dec 17, 2012
4.8 / 5 (6) 8 | with audio podcast

For the Milky Way, it's snack time

Using the Sloan Digital Sky Survey, researchers have discovered a band, or stream, of stars believed to be the remnant of an ancient star cluster slowly being ingested by the Milky Way, Earth's home galaxy.

Oct 25, 2012
4.6 / 5 (5) 1

The Helix nebula: Bigger in death than life

(Phys.org)—A dying star is refusing to go quietly into the night, as seen in this combined infrared and ultraviolet view from NASA's Spitzer Space Telescope and the Galaxy Evolution Explorer (GALEX), which ...

Oct 04, 2012
3.5 / 5 (2) 2 | with audio podcast

Hubble sees a lonely galactic island

(Phys.org) -- In terms of intergalactic real estate, our solar system has a plum location as part of a big, spiral galaxy, the Milky Way. Numerous, less glamorous dwarf galaxies keep the Milky Way company. ...

Aug 20, 2012
4.8 / 5 (8) 9 | with audio podcast

Hubble telescope unmasks ghost galaxies

(Phys.org) -- Astronomers have used Hubble Space Telescope to study some of the smallest and faintest galaxies in our cosmic neighbourhood. These galaxies are fossils of the early Universe: they have barely ...

Jul 10, 2012
4.1 / 5 (12) 2 | with audio podcast

UKIRT discovers 'impossible' binary stars

(Phys.org) -- A team of astronomers have used the United Kingdom Infrared Telescope (UKIRT) on Hawaii to discover four pairs of stars that orbit each other in less than 4 hours. Until now it was thought that ...

Jul 05, 2012
4.8 / 5 (18) 18 | with audio podcast